Smartphones are literally portable supercomputers, that the Avarage Joe can afford. They literally have more data capacity than the Saturn V (The Rocket that helped the astronauts to land on the moon back in 1969) and all of the White House computers from the year 2000.
We can use it to make posts like these and even talk to people around the world.
Even William Gibson (Author of Neuromancer) was astonished from the smartphone invention.
So would you consider smartphones cyberpunk?